//*****************************************************************************
//
// startup_ewarm.c - Startup code for use with IAR's Embedded Workbench,
//                   version 5.
//
// Copyright (c) 2007-2008 Luminary Micro, Inc.  All rights reserved.
// 
// Software License Agreement
// 
// Luminary Micro, Inc. (LMI) is supplying this software for use solely and
// exclusively on LMI's microcontroller products.
// 
// The software is owned by LMI and/or its suppliers, and is protected under
// applicable copyright laws.  All rights are reserved.  You may not combine
// this software with "viral" open-source software in order to form a larger
// program.  Any use in violation of the foregoing restrictions may subject
// the user to criminal sanctions under applicable laws, as well as to civil
// liability for the breach of the terms and conditions of this license.
// 
// THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
// 
// This is part of revision 2692 of the Stellaris Peripheral Driver Library.
//
//*****************************************************************************
#include "includes.h"
//*****************************************************************************
//
// Enable the IAR extensions for this source file.
//
//*****************************************************************************
#pragma language=extended

//*****************************************************************************
//
// Forward declaration of the default fault handlers.
//
//*****************************************************************************
static void NmiSR(void);
static void FaultISR(void);
static void IntDefaultHandler(void);
void hard_fault_handler_asm(void);

//*****************************************************************************
//
// External declaration for the interrupt handler used by the application.
//
//*****************************************************************************
extern void SysTickIntHandler(void);
//*****************************************************************************
//
// External declaration for the interrupt handler used by the application.
//
//*****************************************************************************
extern void UART1IntHandler(void);
//extern void Timer0IntHandler(void);
//*****************************************************************************
//
// The entry point for the application startup code.
//
//*****************************************************************************
extern void __iar_program_start(void);

//*****************************************************************************
//
// Reserve space for the system stack.
//
//*****************************************************************************
static unsigned long pulStack[64] @ ".noinit";

//*****************************************************************************
//
// A union that describes the entries of the vector table.  The union is needed
// since the first entry is the stack pointer and the remainder are function
// pointers.
//
//*****************************************************************************
typedef union
{
    void (*pfnHandler)(void);
    unsigned long ulPtr;
}
uVectorEntry;

//*****************************************************************************
//
// The vector table.  Note that the proper constructs must be placed on this to
// ensure that it ends up at physical address 0x0000.0000.
//
//*****************************************************************************
__root const uVectorEntry __vector_table[] @ ".intvec" =
{
    { .ulPtr = (unsigned long)pulStack + sizeof(pulStack) },
                                            // The initial stack pointer
    __iar_program_start,                    // The reset handler
    NmiSR,                                  // The NMI handler
    FaultISR,                               // The hard fault handler
    IntDefaultHandler,                      // The MPU fault handler
    IntDefaultHandler,                      // The bus fault handler
    IntDefaultHandler,                      // The usage fault handler
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // SVCall handler
    IntDefaultHandler,                      // Debug monitor handler
    0,                                      // Reserved
    OSPendSV,                               // The PendSV handler
    Tmr_TickISR_Handler,                    // The SysTick handler
    IntDefaultHandler,                      // GPIO Port A
    IntDefaultHandler,                      // GPIO Port B
    IntDefaultHandler,                      // GPIO Port C
    IntDefaultHandler,                      // GPIO Port D
    IntDefaultHandler,                      // GPIO Port E
    IntDefaultHandler,                      // UART0 Rx and Tx
    UART1IntHandler,                        // UART1 Rx and Tx
    IntDefaultHandler,                      // SSI Rx and Tx
    IntDefaultHandler,                      // I2C Master and Slave
    IntDefaultHandler,                      // PWM Fault
    IntDefaultHandler,                      // PWM Generator 0
    IntDefaultHandler,                      // PWM Generator 1
    IntDefaultHandler,                      // PWM Generator 2
    IntDefaultHandler,                      // Quadrature Encoder
    IntDefaultHandler,                      // ADC Sequence 0
    IntDefaultHandler,                      // ADC Sequence 1
    IntDefaultHandler,                      // ADC Sequence 2
    IntDefaultHandler,                      // ADC Sequence 3
    IntDefaultHandler,                      // Watchdog timer
    IntDefaultHandler,                      // Timer 0 subtimer A
    IntDefaultHandler,                      // Timer 0 subtimer B
    IntDefaultHandler,                      // Timer 1 subtimer A
    IntDefaultHandler,                      // Timer 1 subtimer B
    IntDefaultHandler,                      // Timer 2 subtimer A
    IntDefaultHandler,                      // Timer 2 subtimer B
    IntDefaultHandler,                      // Analog Comparator 0
    IntDefaultHandler,                      // Analog Comparator 1
    IntDefaultHandler,                      // Analog Comparator 2
    IntDefaultHandler,                      // System Control (PLL, OSC, BO)
    IntDefaultHandler,                      // FLASH Control
    IntDefaultHandler,                      // GPIO Port F
    IntDefaultHandler,                      // GPIO Port G
    IntDefaultHandler,                      // GPIO Port H
    IntDefaultHandler,                      // UART2 Rx and Tx
    IntDefaultHandler,                      // SSI1 Rx and Tx
    IntDefaultHandler,                      // Timer 3 subtimer A
    IntDefaultHandler,                      // Timer 3 subtimer B
    IntDefaultHandler,                      // I2C1 Master and Slave
    IntDefaultHandler,                      // Quadrature Encoder 1
    IntDefaultHandler,                      // CAN0
    IntDefaultHandler,                      // CAN1
    IntDefaultHandler,                      // CAN2
    IntDefaultHandler,                      // Ethernet
    IntDefaultHandler                       // Hibernate
};

//*****************************************************************************
//
// This is the code that gets called when the processor receives a NMI.  This
// simply enters an infinite loop, preserving the system state for examination
// by a debugger.
//
//*****************************************************************************
static void
NmiSR(void)
{
    //
    // Enter an infinite loop.
    //
    while(1)
    {
    }
}

//*****************************************************************************
//
// This is the code that gets called when the processor receives a fault
// interrupt.  This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
FaultISR(void)
{
    //
    // Enter an infinite loop.
    //
    hard_fault_handler_asm();
    while(1)
    {
    }
}

//*****************************************************************************
//
// This is the code that gets called when the processor receives an unexpected
// interrupt.  This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
IntDefaultHandler(void)
{
    //
    // Go into an infinite loop.
    //
    while(1)
    {
    }
}

// hard fault handler wrapper in assembly 
// it extract the location of stack frame and pass it 
// to handler in C as pointer. 
void hard_fault_handler_asm(void) 
{ 
asm (//"IMPORT hard_fault_handler_c \n"
      "TST LR, #4 \n"
      "ITE EQ \n"
      "MRSEQ R0, MSP \n"
      "MRSNE R0, PSP \n"
      "B hard_fault_handler_c");

} 

// hard fault handler in C, 
// with stack frame location as input parameter 
void hard_fault_handler_c(unsigned int * hardfault_args) 
{ 
unsigned int stacked_r0; 
unsigned int stacked_r1; 
unsigned int stacked_r2; 
unsigned int stacked_r3; 
unsigned int stacked_r12; 
unsigned int stacked_lr; 
unsigned int stacked_pc; 
unsigned int stacked_psr; 

stacked_r0 = ((unsigned long) hardfault_args[0]); 
stacked_r1 = ((unsigned long) hardfault_args[1]); 
stacked_r2 = ((unsigned long) hardfault_args[2]); 
stacked_r3 = ((unsigned long) hardfault_args[3]); 

stacked_r12 = ((unsigned long) hardfault_args[4]); 
stacked_lr = ((unsigned long) hardfault_args[5]); 
stacked_pc = ((unsigned long) hardfault_args[6]); 
stacked_psr = ((unsigned long) hardfault_args[7]); 
/*
printf ("[Hard fault handler]\n"); 
printf ("R0 = %x\n", stacked_r0); 
printf ("R1 = %x\n", stacked_r1); 
printf ("R2 = %x\n", stacked_r2); 
printf ("R3 = %x\n", stacked_r3); 
printf ("R12 = %x\n", stacked_r12); 
printf ("LR = %x\n", stacked_lr); 
printf ("PC = %x\n", stacked_pc); 
printf ("PSR = %x\n", stacked_psr); 
printf ("BFAR = %x\n", (*((volatile unsigned long *)(0xE000ED38)))); 
printf ("CFSR = %x\n", (*((volatile unsigned long *)(0xE000ED28)))); 
printf ("HFSR = %x\n", (*((volatile unsigned long *)(0xE000ED2C)))); 
printf ("DFSR = %x\n", (*((volatile unsigned long *)(0xE000ED30)))); 
printf ("AFSR = %x\n", (*((volatile unsigned long *)(0xE000ED3C)))); 

exit(0); // terminate 
*/
return; 
} 